Gas-burner.



A. J. BOYNTN.

.GAS BURNER.

APPLICATION FILED MAY 2, 1912.

FIG.1

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UNITED STATES PATENT oFEIcE.-

ARTHUR J'. BOYNTON, 0F LORAIN, OHIO.

Specification of Letters Patent. 5 nppneation'aiertgye,1912. serial No.694,724.

ing novel means whereby regulation andk control of the supply of gas andair is el'ected, and proper mixing thereof 1s attalned.

Another object of the invention is to pro-'v vide a gas burner havingimproved operating means wherebyv the gas burner ismoved into and out ofoperative position and isk held in operative position, and furtherobjects of the invention will lbe more fully described and claimedhereinafter. Referring to the accompanying drawlngs forming part of thisspecification, Figure -1 is a sectional elevation showing a gas burnerconstructed and arranged in accordance with my invention as applied foruse on a hot blast store. Fig. 2 is a transverse section on the line II-II Fig. 1, showing a detail of the gas and air conveyer and the grid ordamper by which the supply of air mixed with the gases is regulated andcontrolled. Fig. 3 is a sectional end elevation of the gas )burnerandthe branch pipe or conduit through which gas is supplied to the burner,taken on the line III- III of Fig. 1.

In the drawings 2 designates a horizontally extending tubular gasconduit which is rotatably mounted in the vertical branch pipe 3 bywhich the gas conduit 2 isconnected to the gas box 4. An opening 5 inthe side wall of the conduit 2 adjacent to its closed rear end connectsthe` interior of the conduit 2 with the branch pipe 3. The plate 6removably secured on the outer end of the conduit, by engaging with thebranch pipe 3, prevents lengthwise movement of the conduit 2 relative tothe branch pipe. "The upper end of the branch pipe 3 is. provided with acap 7 to secure the conduit 2 in place thereon and the flanged lower endof the pipe 3 is bolted to the flanged outlet 8 on the gas box 4. Thegas box '4 *lis connected in the usual manner with a branch pipe (notshown) leading from a gas main, gas Hue, or other source ofl gas supply,and its construction notl forming a partof this invention, the gas' box4 will not` be further described.

The closed rear end of the gas conduit 2 is provided with a tiangedbranch 9, and a.

lever 10 on the branch 9 provides a convement means for turningorrot-ating the tubular gas conduit 2 in the supporting pipe PatentedMay 13, 1913.

3 so as to vary `the'si'ze ofthe opening 5 .l

connectingth'e 'conduit 2 and branch pipe`u3 1n' regulatlngeandvcontrollin y the amount".

of gas supplied tofthe conduit 2..- A.; pipe or tube 11 is secured byone efnd` in the open'- ing 12 the, branch 9 on the rear end of thevconduit-2 tov provide a supply ofair to the center'jof the-'gas conduit2'at its forward. or j discharge Y end', a current 'fof" air beinginduced inithispipe bythe iniiowing gases.A y f base'plate13 isasupportlii havin parallel 'ways -15 on the rtop' surface thereo 'formingl a track.v yforl the wheels -ltlwith which the as'andair conveyer'17forming part of my lmproved gas` burner, is provided v`so as' to.

`be movable' relative to the conduit 23 and movableintoand outofpositionwith re.

spect to the gas inlet- 18 on the hotblast t stove 19 or otherl deviceto which the gas burner is applied for use. A stop 20 is provided on thetrack.' support 14- and a pawl 21 pivoted on the shaft or axle'22Vforthe track wheelsl is arranged to vswing and bring its outer end intoengagementwithk the. stop and hold the .nozzle 23 in its 'extendedposition when the burner is in use.

22v aiiords means for moving the pawl 2 1y on this axle 2 2 into and outof engagement with the stop20. Lu s or ears 24 on the nozzle 23 and-onthe lower 'section of the split branch pipe 25 are employed to formbearings for the axles 22.

The gas and air conveyer forming part` secured on the opposite side ofthe gas and` air conveyer frame. The ybranch Vpipe 25. Y

95. The hand wheel 37 on one end of one'axle. A

preferably is split lengthwise into sections, as shown, to facilitatethe assembling of the apparatus. Between the horizontal openings 26 inthe mixer frame are transverse slots or openings 28 which open at eachend through the sides 29-29 of the frame of the gas and air conveyer andwhich also open on the front side 30 into the nozzle 23 of the gas andair conveyer.

Mounted on opposite sides of the gas and air conveyer so' as to bevertically movable, are grids 31 having a series of slots 32 thereinarranged to register with the slots or openings 28 which are adjustablyheld in place by means of an adjusting screw 33 having a hand wheel 34on one end thereof. The screw 33 ext-ends through the cross arm 35 bywhich the upper ends of the grids 31 are connected and held in positionagainst the sides of the gas and air conveyer frame and its lower endbears on the top of the mixer frame so that by turning the hand wheel 34the grids 31 will be raised or lowered to move the slots 32 relative tothe openings and vary the size of the air inlet openings leading intothe gas and air conveyer frame. A cross arm 36 is also employed toconnect the lower ends of the grids 31 and maintain the grids inalinement.

The gas and air conveyer and its nozzle 23 is pushed or moved manuallyon the track rails 15 into and out of position in front of the gas inlet18 on the stove 19. The branch pipe 25, (as will be seen in Fig. 1)telescopes on and moves horizontally relative to the conduit 27 the gasand air conveyer and its nozzle 23 moving with the branch pipe 25 on thesupport 14.

The operation of my improved gas burner is as follows: When applied to ahot blast stove the door 38 closing the gas inlet 18 to the stove, whenthe stove is on air is unfastened and is moved away from in front of thegas inlet 18, as shown, the door being suspended by an arm 39 havingwheels 40 on its upper end from the track 41 secured on the side of thestove. The burner is then moved forwardly manually on the supportingways 15 to bring the nozzle 23 in position in front of the gas inlet 18on the stove.' The hand wheel 37 on one shaft 22 for the track wheel 16is then turned to move the pawl 21 into engagement with the stop 20 toheld the nozzle 23 of the burner in position in proximity to the gasinlet 18 on the stove. The gas rises from the gas box t upwardly throughthe branch pipe 3 into the conduit 2 and passes out of the forward endof the conduit into the chamber 27 connecting the gas burner with thegas and air conveyer. The gas then passes through the series of parallelopenings 26 in the gas and air conveyer into the nozzle 23 of the gasand air conveyer, where the gas is mixed with the entering air. Air' isdrawn through the openings in thc opposite sides 29 of the gas and airconveyer into the ser' ries of parallel air inlets 28 which are arrangedto alternate with the gas openings 26 in the gas and air conveyer andpasses from the inlets 28 into the 'nozzle 23 of the gas and airconveyer where it is thoroughly mixed with the gas. The mixture of gasand air then passes from the nozzle 23 into the gas inlet opening 18 inthe stove where it becomes ignited and is burned. The grids 31 on thesides of the gas and air conveyer are moved relatively to the gas andair conveyer by means of the hand wheel 34 to regulate the volume of airadmitted into the gas and air conveyer and the hand lever 10 on theIclosed end of the conduit 2 is moved to rotate the conduit in the pipe 3forming the support therefor so as to vary the size axle 22 for thetrack wheels is then manipulated'to lift the pawl 21 out of engagementwith the stop 20, and the nozzle 23 of the gas burner is movedbackwardly until again in the position shown in the drawings. The door38 is then moved until it is again in front of the gas inlet 18 on thestove 19,

in which position it is bolted or otherwise secured.

The advantages of my invention will be apparent to those skilled in theart. The apparatus is simple and is easily kept in repair. By its usethe mixture of air and gases is'readily changed as is found necessary ordesirable and the gas burner -is quickly moved into and out of positionin front of the stove or other device to which it is applied for use.

Modifications in the construction and arrangement of the parts may bemade wit-hout departing from my invention. Although the apparatus isshown appliedfor use to a hot blast stove it is also adapted for use infurnaces of boilers and kilns and with various other devices.

I claim 1. A gas burnercomprisin a conduit, a support in which saidconduit is rotatably mounted through which gas is supplied thereto, agas and air conveyer in front of and movable relatively to said conduit,

the conduit and having independent air inlet openings.

2. A gas burner comprising a tubular conygas inlets from the conduit.and independent air inlet openings, and means. adjustably secured on theconve er to vary the size of said air inlets and regu ate the air supplythereto.

3. A gas burner comprising a conduit-,a support in Which said condult isrotatably mounted through which gas is supplied to the conduit, a gasand air conveyer in front of the conduit, and movable with respectthereto, meanson the conveyer telescoping on the end of and connectingthe conduit with said conveyer, a nozzle for the conveyer, said conveyerhaving gas inlets con'- necting the conduit with the nozzle, inde--pendent air inlets opening into said'nozzle, and a support on which saidconveyer and nozzle are movably mounted.

4. A gas burnercomprising a conduit, a support in which said conduit isrotatably mounted through which gas is supplied to the conduit, a gasand air conveyer in front of the conduit, and movable with respectthereto, means on the conveyer telescoping on the end of and connectingthe conduit with said conveyer, a nozzle Ifor the conveyer, gas inletson the conveyer connecting the conduit with the nozzle, independent airinlets opening into said nozzle, a support on ,which said conveyer andnozzle are movably mounted, and fastening means on the conveyer andsupport for securing said con.- veyer against backward movement on thesupport When the conveyer is in extended position.

5. In a gas burner a gas and air conveyer, a series of inlets extendingfrom side to side therethrough for supplying gas thereto, a series ofair inlet openings therein, and a grid on said conveyer adjustablysecured thereon to regulate the supply of air to the conveyer.

6. vIn a gas burner, a Gas and air conveyer comprising a rectangulaarframe having a plurality of parallel gas passages with inlet and outletopeningsv in tWo opposite sides thereof, a series of air passages havinginlet openings in the other two sides thereof, and outlet openings inthe same side as the outlet openings for the gas passages, and

means onl the inlets to the air passages for varying the size thereofand regulating the air passing therethrough.

7 In a gas burner, a gas and air conveyer comprising a rectangular framehaving al plurality of parallel gas passages with inlet and outletopenings in tWo opposite sides thereof, a series of air passages havinginlet openings in the other two sides thereof, and outlet openings inthesame side as the outlet openings for the gas passages, sliding gridshaving openings registering with the inlet openings to the air passages,and means for moving the grids to regulate and control the supply'of airto said air passages.

8. In a gas burner a gas andair conveyer comprising a frame having aplurality of parallel gas passages and a plurality of air passagesalternating with said" gas passages,x

of the conduit, and movable with respect thereto, means on the conveyertelescoping on the end of and connecting the conduit with said conveyer,a nozzle for the conveyer, gas inlets on the conveyer connecting theconduit with the nozzle, independent air inlets opening vinto saidnozzle, a support on which said conveyer and nozzle 'are mov' ablymounted, and a pawl and stop co-acting to fasten and secure the conveyerand nozzle thereon against backward movement on the support when thenozzle is in extended position on said sup ort.

In testimony whereo I have hereunto set my hand.

i ARTHUR J BOYNTON. Witnesses:

H. W. INGERsoLL, FLORENCE E. S'rnTsoN.

